import router from './router'
import store from './store'
import {
    Message
} from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import {
    getToken
} from '@/utils/auth' // getToken from cookie
NProgress.configure({
    showSpinner: false
}) // NProgress configuration
const whiteList = ['/user/login'] // no redirect whitelist
router.beforeEach((to, from, next) => {
    NProgress.start() // start progress bar
    if (getToken()) { // determine if there has token
        /* has token*/
        if (to.path === '/user/login') {
            next({
                path: '/'
            })
            NProgress.done() // if current page is dashboard will not trigger afterEach hook, so manually handle it
        } else {
            if (store.getters.roles.length === 0) { // 判断当前用户是否已拉取完user_info信息
                store.dispatch('GetInfo').then(res => { // 拉取user_info
                    const roles = res.data.roles // note: roles must be a array! such as: ['editor','develop']
                    store.dispatch('GenerateRoutes', {
                        roles
                    }).then(() => { // 根据roles权限生成可访问的路由表
                        router.addRoutes(store.getters.addRouters) // 动态添加可访问路由表
                        next({ ...to,
                            replace: true
                        }) // hack方法 确保addRoutes已完成 ,set the replace: true so the navigation will not leave a history record
                    })
                }).catch((err) => {
                    store.dispatch('FedLogOut').then(() => {
                        Message.error(err || 'Verification failed, please login again')
                        next({
                            path: '/'
                        })
                    })
                })
            } else {
                next()
            }
        }
    } else {
        /* has no token*/
        if (whiteList.indexOf(to.path) !== -1) { // 在免登录白名单，直接进入
            next()
        } else {
            next(`/user/login?redirect=${to.path}`) // 否则全部重定向到登录页
            NProgress.done()
        }
    }
})
router.afterEach(() => {
    NProgress.done() // finish progress bar
})